Method of rolling plate or sheet glass



(No Model.) 6 Sheets-Sheet 1.

J. W. BONTA. METHOD OF ROLLING PLATE 0R SHEET GLASS. No. 462,529. Patented Nov. 8,1891.

IlIlIllIlIlIilIl WITNESSES A TTORNE V (No Model.) 6 Sheets-Sheet 2.

J. W. BONTA. METHOD OF ROLLING PLATE OR SHEET GLASS. No. 462,529. Patented Nov. 3, 1891.

WITNESSES:

INVENTOR A TTORNE Y we news PEYERS co., Pno-rmurno wAsmNcYon, a. c.

(No Model.) 6 SheetsSl1eet 3. J. W. BONTA. METHOD OF ROLLING PLATE 0R SHEET GLASS.

No. 462,529. Patented Nov. 3, 1891;

[NVE/VTOR WITNESSES.- I! 1 ATTORNEY (No Model.) 6 Sheets-Sheet 4.

J. W. BONTA. METHOD OF ROLLING PLATE OR SHEET GLASS.

Patented N0v.3, 1891.

INVENTOR A TTORNEV WlgyVESSES: 7W

(No Model.) 6 Sheets-Shet 5. J. W. BONTA.

METHOD OF ROLLING PLATE 0R SHEET GLASS.

Patented Nov. 3, 1891.

[NVENTOR .A TTORNEY yak LVlT/VESSES: 9

(No Model.) 6 Sheets-Sheet 6.

J. W. BONTA. METHOD OF ROLLING PLATE 0R SHEET GLASS. N0.'462,5Z9. Patented Nov. 3, 1891.

WITNESSES: INVENTOR A am).

ATTORNEY v platens.

NITED STATES PATENT OFFICE.

JAMES \V. BONTA, OF \VAYNE, PENNSYLVANIA.

METHOD OF ROLLING PLATE OR SHEET GLASS.

SPECIFICATION forming part of Letters Patent No. 462,529, dated November 3, 1891.

Application filed April 7, 1891. Serial No. 388,050. (No model.)

all whom it may concern.-

Beitknown that 1, JAMES V. BONTA, a citizen of the United States, residing at Vayne, in the county of Delaware and State of Pennsylvania, have invented certain new and usef ul Improvements in Methods of Rollin g Plate or Sheet Glass, of which the following is a specification.

My invention has relation to rolling plateglass; and ithas for its objectamethod of rolling both sides of the plate successively, in order to remove irregularities therein and thus dispense as much as possible with the undue grinding of the same when rolled only on one side, as heretofore practiced.

To this end my invention consists in first rolling the plate on one side, then looking the plate between upper and lower platens, then rotating the plate to bringits lower or unrolled side uppermost, and then rolling the latter side to complete the operation of rolliu g both sides of the plate-glass. The manner in which such method is accomplished is fully set forth in the following, specification of a form of apparatus devised by me, and reference is had to the accompanying drawings, wherein- Figure 1 is a side elevation, partly broken away, showinga machine for rolling both sides of plate-glass in accordance with my invention. Fig. 2 is a longitudinal section of the same, partly in elevation. Fig. 3 is an end elevation of the same. Fig. 4C is a like view, partly sectional, illustrating the rotation of the plate-glass and platens. Fig. 5 is a detail view, drawn to an enlarged scale, showing end elevation of supporting-journals and locking mechanism for the platens. Fig. 6 is a longitudinal vertical section of same, with part of the platens in elevation, showing the looking or movable tubular sleeve released from the platens. Fig. '7 is a horizontal section of the same. Fig. 8 is a like view showing the looking tubular sleeve in engagement with the Fig. 0 is a broken end elevation of the platens. Figs. 10 and 11 are elevations, partly sectional, the former showing stoppin and one position of separating-strip for the platens and the latter the other position of said strip. Fig. 12 is a cross-section of laterally-moving guide rails or supports for the platen when moving into position in the machine for rotation, said figure showing such rails or supports in their normal position. Fig. 13 is a like view showing the rails or supports moved laterally out of the way of the platens. Fig. 14 is a plan view of Fig. 12, and Fig. 15 is a like view of Fig. 13. Fig. 16 is a plan view, partly sectional, showing mechanism for clamping the platens together. Fig. 17 is a side elevation, partly sectional, of the same. Fig. 18 is an end elevation of same. Figs. 19 and 20 are cross-sections showing preferable form of actuating mechanism for laterally moving the guide rail or supports for the platen, the same being shown in two different positions. Fig. 21 is a sec tion on line 1 1, Fig. 1!); and Fig. 22 is alike View on the line 2 2, Fig. 20. Figs. 23 and 2t are sectional views of the parts in Figs. 21 and 22, at right angles thereto, showing the throw of cam Z.

A represents the housings or frame of the machine, which preferably carries an engine or. motor B, and has rollers or wheels a, running on guides or tracks a, so as to make it portable; but, if desired, it may be located in a fixed position.

The housings of the machine A consist of a long lower part a having at their upper edges fixed guides or roller-supports a and laterally-moving guides or roller-sup ports (7, the latter being near the rear end of the machine, and are of a length approximating that of the platens D D, used in the machine, and upon these guides or supports said platens are reciprocated to roll the plateglass.

E E represent vertical standards secured to the housing part a and have open-top bearings e, suitably formed to receive the journals f and eccentrics f on said journals of a presser-roller F, which is in gear with the driving-shaft 7) of engine B by means of wheels f and Z). The presser-roller F is provided with armsf f, the upperend of which has a pin or other connection 1' with slots or apertures f in a curved bracket f, concentric with the axis of the presser-roller, said pin or connection f being removable from the bracket f, so that by moving said arms f f to and fro or radially the eccentrics f on the presser-roller journals f are moved to set the roller higher or lower to suit different thicknesses of plate-glass, and also to vary the rolling pressure of the same.

The platens D D are provided with side racks d for engagement with the gear-wheels f f' on the presser-roller F, and at one end said platens are provided with side recesses (Z to receive the ends 9 of racks g, pivoted at g to racks G, which are located on the fixed guides or supports a in advance of the platen.

a a represent vertical standards, which support a vertically-sliding frame H, of any suitable or desired construction, hung upon variable-speed or other screw-worms or actuating mechanism 71 for raising and lowering said frame, said actuating mechanism being mounted upon a shaft 71 having its hearings in standards a, so as to be movable longitudinally by means of a shifting-lever h fl and has a bevel or other gear-wheel h in engagement with like wheels b b and b with the to shaft h, so as to admit of the longitudinal movement of the latter when shifted and when rotating to lift or lower frame H, as hereinafter described, and said wheel is held in position to always engage the wheel b by a bracket h on the motor B. In standards a is journaled a shaft I, upon which at one end is splined the bevel-wheel 2', having a shifting-lever i to cause said wheel 2' to engage with and disengage from wheel 17 At the other end of shaft I is a gear-wheel i and a link 2' which engages the stud-shaft 2' of an idler-gear 2' said stud-shaft i having an end bearing in a slot i in one end of the frame H, as more plainly shown in Fig. 3. The lower ends of frame H on each side thereof are provided with inside and approaching short journals or studs k and with tubular boxes h", which inclose said journals, the forward or free ends of the latter projecting beyond said boxes. (See more plainly Figs. 5 to 8, inclusive.) Within boxes h, and between them and the journals k are tubular sliding sleeves if, having suitable slots h to admit of their sliding movement. Mounted in said sleeves and working in slots h of boxes 71 are blocks h ,in which are journaled eccentrics it uponvertical shafts h mounted upon the ends of frame H. The upper ends of shafts 72 are provided with gear-wheels 72, engaging with a sliding rack shifting or actuating bar it, so that by moving the latter in one direction the eccentrics h and blocks h are actuated to slide the sleeve 77, in one direction, and by moving the bar h reversely said eccentrics and blocks are actuated to slide the sleeve h in an opposite direction, for purposes hereinafter described.

Loosely mounted upon the inner ends of boxes h are gear-wheels h, which engage with the idlers t and thence by wheels 1' with shaft I. Said wheels h at suitable intervals on their inner sides are provided with stop-pins it, (see more plainly Fig. 3,) for a purpose hereinafter to be described.

1 frame H. struction, and one of them is always inposition on the end of the frame H, as shownby Fig. 1, andthe other upon thefixed guides a The laterally-sliding rails or supports C (see more plainly Figs. 12 and 13) rest upon a fixed support 0, secured to thehousing part a and have depending pins or studsc', which pass through straight lateral slots 0 in supports 0 and enter slots 0 in sliding plates 0 between supports a and the top edge of the housings. The slots 0 arepartly straight and partly at an angle, as shown more plainly in Figs. 14 and 15, so that when plates 0 are moved in one direction the angular part of its slots 0 actuates the studs 0' therein tolaterally move the roller guides or supports C in one direction, and when reversely moved said supports 0 are laterally moved in an opposite direction. To actuate the plates 0 they are provided with depending studs 0 I passing through slots 0 in the top of the housings and provided with a bar or link connec-' ftion c and a shifting or actuating lever 0 (See Fig. 1.)

motor-driving shaft Z). The wheel h is splined 5 The platens D D are on their ends and at i their middle provided with semicircular projecting journals or supports 61 for engagement with the journals 72 on the ends of Both platens are identical in conin front of the presser-roller F normally, to

begin operations, which are substantially as follows: The presser-roller F is adjusted for I the thickness of the glass and the pressure required for rolling, and after the plate-glass is laid upon the platen in front of the presser-roll, which glass is indicated at 00, the

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vided and keeping in engagement with the presser-roller gears f to admit of the full length of such movement. As soon as the platen D arrives at such described position the pivoted racks g are raised out of engage ment with the platen by means of a lever 9 (see more plainly Fig. 2,) meanwhile the rotation of the presser-roller having been stopped or its actuating mechanism being thrown out of gear. The shaft h is then shifted to lower the frame H and platen D until the latter rests upon the platen D, with the journals 72 of the frame H between the semicircular boxes or bearings d of the platens. (See Fig. 2;) The shifter-bar h is then actuated to project or slide the tubular sleeves it into engagement with the platen boxes or bearings 01 to lock the same together. The shaft h is then height. \Vhen sufficiently raised, the movement of shaft 7i is stopped, and the shaftI is put into operation'to rotate wheels h, the stops or studs 77. of which being in engagement with the platens, as shown in Fig. l, the latter are rotated to bring the platen D on top, reversing the position of the platens and bringing the unrolled side of the glass uppermost. The shaft h is then actuated to lower the platens, the lever 0 being meanwhile shifted to return the supports 0 to their normal position to receive the platens. Bar h is shifted to unlock the sleeves 71 from the platen boxes or bearings (1 and the shaft h is then actuated to raise the upper platen D from the lower one D, the glass remaining upon the latter. The pivoted rack gis then moved into engagement with the recesses in platen D, and the presser-roller F is then started, but in a reverse direction, to cause the platen to move in a direction the opposite of that indicated by arrow 00, Fig. 1, to roll the other side ofthe glass.

If desired, the platens may be furnished with pivoted clamps 7tand studs 7c, the former being on one and the latter on the other platen, (see Figs. 16 to 18,) for clamping the platens at their sides when rotated. These clamps 7r. may be connected to suitablyarranged angle-levers 71: k by links k 70 having reacting-springs 76 the free ends of the levers k being in line with the inner end of the clamping tubular sleeves 72 so that when. the latter are moved to clamp the studs or journals (1 of the platens said sleeves will also actuate the levers k to automatically cause the clamps 7a to engage with the studs 7t, and when said sleeves are released the reacting-springs k will act to cause the levers 1'3 t to move to unlock the clamps 7.; from the studs 70'.

Instead of using the actuating mechanism for the movable guides C, as above described,

and shown in Figs. 12 to 15, a block Z, with eccentric Z, having a gear connection Z with a shifting rack-bar, may be substituted, as shown in Figs. 19 to 2i. It will be noticed, therefore, that the details of the machine may be greatly varied within the scope of the invention, and hence the construction and arrangement of the machine may also be correspondingly varied.

I do not herein claim the machine, as the same forms the subject-matter of another pending application filed of an even date herewith, Serial No. 388,0t9, the invention herein claimed being the method of rolling both sides of plate-glass to remove its irregularities, and'thereby avoid the undue grinding necessary when it is rolled only on one side, such method broadly consisting of first rolling one side of the glass, then rotating or reversing said sides, and then rolling the other side, and to this end my invention includes any construction and operation of mechanism for accomplishing such end.

\Vhat I claim is 1. The method herein described for rolling plateglass, which consistsin first rolling one side of the plate, then rotating said plate to reverse its sides, and then rolling the other side of the plate, substantially as set forth.

2. The method'of rolling plate-glass, which consists in first rollingthe plate on one side,

then placing it between platens, then raising both platens, then rotating the same, then lifting one of said platens, and then rolling the other side of the plate, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES W. BONTA. IVitnesses:

S. J. VAN STAVOREN, CHAS. F. VAN IloRN. 

